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Vulnerability details: VCID-ytfp-zwek-cbbn
Vulnerability ID VCID-ytfp-zwek-cbbn
Aliases CVE-2018-0202
Summary clamscan in ClamAV before 0.99.4 contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation checking mechanisms when handling Portable Document Format (.pdf) files sent to an affected device. An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted .pdf file to an affected device. This action could cause an out-of-bounds read when ClamAV scans the malicious file, allowing the attacker to cause a DoS condition. This concerns pdf_parse_array and pdf_parse_string in libclamav/pdfng.c. Cisco Bug IDs: CSCvh91380, CSCvh91400.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-125 Out-of-bounds Read
System Score Found at
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
epss 0.02008 https://api.first.org/data/v1/epss?cve=CVE-2018-0202
ssvc Track https://bugzilla.clamav.net/show_bug.cgi?id=11973
ssvc Track https://bugzilla.clamav.net/show_bug.cgi?id=11980
cvssv3 5.6 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
ssvc Track https://lists.debian.org/debian-lts-announce/2018/03/msg00011.html
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2018-0202
cvssv3 5.5 https://nvd.nist.gov/vuln/detail/CVE-2018-0202
archlinux Critical https://security.archlinux.org/AVG-602
ssvc Track https://security.gentoo.org/glsa/201804-16
ssvc Track https://usn.ubuntu.com/3592-1/
ssvc Track https://usn.ubuntu.com/3592-2/
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2018-0202
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0202
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
201804-16 https://security.gentoo.org/glsa/201804-16
ASA-201803-14 https://security.archlinux.org/ASA-201803-14
AVG-602 https://security.archlinux.org/AVG-602
cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
CVE-2018-0202 https://nvd.nist.gov/vuln/detail/CVE-2018-0202
msg00011.html https://lists.debian.org/debian-lts-announce/2018/03/msg00011.html
show_bug.cgi?id=11973 https://bugzilla.clamav.net/show_bug.cgi?id=11973
show_bug.cgi?id=11980 https://bugzilla.clamav.net/show_bug.cgi?id=11980
USN-3592-1 https://usn.ubuntu.com/3592-1/
USN-3592-2 https://usn.ubuntu.com/3592-2/
No exploits are available.
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-12-02T18:54:26Z/ Found at https://bugzilla.clamav.net/show_bug.cgi?id=11973
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-12-02T18:54:26Z/ Found at https://bugzilla.clamav.net/show_bug.cgi?id=11980
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-12-02T18:54:26Z/ Found at https://lists.debian.org/debian-lts-announce/2018/03/msg00011.html
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-0202
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-0202
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-12-02T18:54:26Z/ Found at https://security.gentoo.org/glsa/201804-16
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-12-02T18:54:26Z/ Found at https://usn.ubuntu.com/3592-1/
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-12-02T18:54:26Z/ Found at https://usn.ubuntu.com/3592-2/
Exploit Prediction Scoring System (EPSS)
Percentile 0.8295
EPSS Score 0.02008
Published At Aug. 16, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:37:26.173989+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/3592-1/ 37.0.0